Lubricator



(No Model.)

E. GRACE 8v 0. H. PARSHALL, Jr.

LUBRIGATOR. No. 330,891. Patented Nov. 24, 1885.

WITNESSES 0 ma INVENTORS Z53 2 M I Attorney N. PEYERS. PhnlOUlMgr-aphnr. Wflthingiun. D. C.

llEiTED SiarEs EDWARD GRACE AND CHARLES H. PARSHALL, R, 0F DETROIT, MICHIGAN.

PATENT @Errca LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 330,891, dated November 24-, 1885.

Application filed July 30, 1885. Serial 110 173 094. (No model.)

To all whom it may concern.- 7

Be it known that we, EDWARD GRACE and CHARLES H. PARSHALL, Jr. of Detroit, county of Wayne, State of Michigan, have invented a new and useful Improvement in Lubricators; and we declare the following to be a fu1l,clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form a part of this specification.

Our invention consists of the combinations of devices and appliances hereinafter specified, and more particularly pointed out in the claim.

In the drawings, Figure 1 represents in section andelevation a device embodying our invention; Fig. 2, a side elevation showing the indicator-tube.

Our invention has for its object the production of a lubricator in which steam is admitted to the condenser and oil discharged from the lubricator both through the same stem, said stem connected directly with the side of the condenser; also, in connection therewith, a sight-feed tube depending directly from the under side of said stem and leading from the neck between the condenser and the oil-reservoir, one of the principal features of our construction being the avoidance of the use of the usual small pipe in the condenser andin the oil-reservoir.

A is the oilreservoir. B is its condenser; O, the neck between the condenser and the oil-reservoir. D is the indicator, provided with a removable plug, D, to facilitate filling the oil reservoir. E is the faucet for drawing off the water from the reservoir prior to filling with oil. F is the stem, provided preferably with a partition, F, throughout its whole length. G is the sight-feed tube; G, an oil-passage from the reservoir A to the sight-feed tube. G is a throttling-valve for governing the flow of oil, and F is a similar throttling-valve for regulating the inflow of steam to the condenser.- B is a conduit, which leads condense-water down into the oil-reservoir; B a throttling-Valve for governing the same. b is a steam-passage in the stem'F, and g is the oil-exit passage in the same stem. 1) is a cored passage in the condensing-chamber, with an opening into the condenser at 6 The lower end of the passage B, which passes down into the oilchamber, may, if desired, be formed with the neck 0 in casting, or it may be simply a tube fastened in place.

The operation of the device is as follows: Steam, entering through the passages b 1), passes into the condenser B. The condensewater, passing down through the passage B, displaces the oil and floats the latter up through the passage G, and thence through the sight'feed tube into the stem F and out through the passage 9.

It will be observed that the location of the stem F at the side of the condenser, as shown, enables us to employ a short cored passage, 1), within the condenser, and so dispense with all fixtures inside of the condenser, as well as with all lengthy passages, which are always liable to become clogged up. It will be observed, also, that the sight-feed tube is connected at its lower end to the neck 0 above the oil-reservoir, and that the oil simply follows up through the cored passage, and thence through the sight-feed tube. This dispenses with the necessity of the usual oil-exit pipe within the oil-reservoir. There is therefore needed but the single pipe 13.

A lubricator thus constructed can scarcely get out of order, and possesses little tendency.

to become clogged. The steamadmission and the oil-exit ports b and g are always subject to the same pressure and the same pulsations of steam, and since the oil-exit passage leads directly to the top of the sight-feed tube there is effected the equalization of pressure at both ends of the lubricator, which is of so much importance in a properly-constructed device. The lubricator is also much simplified.

Instead of the cored passage 2), we may simply introduce a small bent pipe into the end of the stem F, to connect with the passage 1; before the stem is screwed into its place. WVe prefer, however, to core this passage, as shown. So, also, while we represent the partition F as extending the whole length of the stem F,it is apparent that it may be extended only a portion of the distance toward the free extremity of the said stem;

What we claim is The combination, with the reservoir A, condenser B, single stem F, having a steam and an oil passage, and extending through the I ter being connected at its lower end with the 10 Wall of the condenser, and a sight-feed tube, neck 0, substantially as described.

G, connected at its upper end with the oil- In testimony whereof We sign this specificapassage of stem F, of the neck 0, intermediate tion in the presence of two witnesses.

of and connected with reservoir A and con- EDWARD GRACE.

denser B, and having a water-passage com- CHARLES H. PARSHALL, JR. municating with said condenser and reservoir, Witnesses: V

and an oil-passage, G, communicating with N. S. WRIGHT,

the reservoir and the sight-feed tube, the let M. B. ODOGHERTY. 

